Hi,
As far as I know e1000 has a feature that it can split a jumbo UDP frame
into some IP fragments.
> From: Hirokazu Takahashi <taka@valinux.co.jp>
> Date: Mon, 09 Sep 2002 16:11:23 +0900 (JST)
>
> Using TSO code is commented out at this moment as TSO for UDP isn't
> implemented yet. I'm waiting for it so that we would remove "#ifdef NotYet"
> to send jumbo UDP frames without any fragmentation and any checksumming.
> Then I hope we will get great performance.
>
> Actually, device interface for what could be used is there, see
> NETIF_F_FRAGLIST. No devices set this and IP never makes use of it
> yet though :-)
>
> Acenic and Tigon3 will be able to do this, probably e1000 has this
> feature as well.
>
> But it does not work how you imagine. One passes already fragmented
> list of packets to card, and it can checksum the packet if you tell it
> which descriptor is first of fragmented frame and which is last.
>
> It does not do the fragmentation of UDP frames for you, only
> checksumming of UDP portion. No card does what you mention.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Sep 15 2002 - 22:00:16 EST